The protecting mechanism and type of apron protection againstthe scour at abutment, spurs, piers and roadbed along the river havebeen analyzed comprehensively, and the equation with apron scourdepth and apron width has been developed in this paper.

• 本文全面分析了沿河路基、桥台、桥墩和丁坝的护坦防护机理和防护型式，提出了设置护坦时桥台及丁坝局部冲刷深度与护坦宽度的关系公式，弥补了前人对桥台及丁坝护坦防护研究的空白，以供桥梁设计及水毁治理人员参考。